// 引入mongoose模块
const mongoose = require('mongoose');
const config = require('config');
// 连接数据库
mongoose.connect(`mongodb://${config.get('db.user')}:${config.get('db.pwd')}@${config.get('db.host')}:${config.get('db.port')}/${config.get('db.name')}`, { useNewUrlParser: true, useUnifiedTopology: true })
    .then(() => {
        console.log('数据库连接成功');
    })
    .catch(err => {
        console.log(err + ' 数据库连接失败');
    });